Cycloramphus rhyakonastes Heyer, 1983, Arq. Zool., São Paulo, 30: 314. Holotype: MZUSP 57827, by original designation. Type locality: "Brasil; Paraná, 15 km W of São João da Graciosa on PR 410 to Curitiba".
Heyer's Button Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 71).
Serra do Mar in the states of Paraná and Santa Catarina, Brazil.
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